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Phagocytes and NADPH oxidases in Inflammation (PNI)

Team El Benna

Department Nephrology, Immunology and Hematology





Team Leader



Our team is interested in studying molecular and cellular mechanisms of inflammation, focusing on the regulationof the main reactive oxygen species (ROS) producing enzymes, the NADPH oxidases (NOXs) and their role in thephysiopathology of inflammatory diseases such as rheumatoid arthritis (RA) and inflammatory bowel diseases (IBD). When their production is controlled, reactive oxygen species (ROS) are involved in many important physiological functions. Thus ROS produced by the phagocyte NADPH oxidase, NOX2, in neutrophils, monocytes and macrophages are required for their bactericidal function, and importantly in dendritic cells, NOX2 has a critical role in antigen cross-presentation. Homologues of NOX2, such as NOX1, are also expressed in epithelial cells, but their physiological role is not fully understood. On the other hand, it is clear that excessive or inappropriate ROS production can induce severe tissue injury that participates to the physiopathology of inflammatory diseases. Deciphering mechanisms underlying activation of NOX2 in phagocytes and NOX1 in epithelial cells is essential to identify novel therapeutic targets in inflammation. The projects of the team aim to understand the regulation of NOX2 in neutrophils, monocytes/macrophages and dendritic cells and NOX1 in epithelial cells by pro- and anti-inflammatory agents; and to translate our basic research to animal models of inflammation, human phagocytic disorders and human inflammatory diseases. Our project combines basic and clinical research and involves several collaborations with teams in the Center for Research on Inflammation (CRI) and Bichat hospital divisions.

Principal research axis:

Our work is conducted following three main axis : 1)-To understand the regulation of the NADPH oxidases NOX in neutrophils, monocytes, macrophages, dendritic cells and epithelial cells in response to pro- and anti-inflammatory agents. 2)-To study polymorphism of NOX and regulators and identify new genetic factors involved in systemic inflammation. 3-To study the role of the NOX2, NOX1 and newly identified proteins in inflammatory process: by investigating their activation in phagocytic disorders, human inflammatory diseases and in animal models of inflammation.


Landmark publications

  • Publication date : 01 July 2020 More

    Innate immune cells in cirrhosis J Hepatol

    Autors : Christine Bernsmeier Schalk van der Merwe Perianin Axel

  • Publication date : 22 January 2020 More

    The dual role of ROS-generating NADPH oxidases in gastrointestinal inflammation and therapeutic perspectives. Antioxidants & Redox Signaling. 2020 Jan 22

    Autors : Dang Pham My-Chan Rolas L El Benna Jamel

  • Publication date : 01 November 2019 More

    The prolyl isomerase Pin1 controls lipopolysaccharide-induced priming of NADPH oxidase in human neutrophils. Frontiers In Immunology Frontiers In Immunology (sous presse).

    Autors : Liu Min Bedouhene Samia Hurtado-Nedelec Maria Margarita Pintard Coralie Dang Pham My-Chan Yu S El Benna Jamel

  • Publication date : 06 September 2019 More

    Cytosolic PCNA interacts with p47phox and controls NADPH oxidase NOX2 activation in neutrophils. J Exp Med. 2019 Sep 6. pii: jem.20180371.

    Autors : Ohayon D De Chiara A Dang Pham My-Chan Thieblemont N Chatfield S Marzaioli V Burgener SS Mocek J Candalh C Pintard Coralie Tacnet-Delorme P Renault G Lagoutte I Favier M Walker Francine Hurtado-Nedelec Maria Margarita Desplancq D Weiss Emmanuel Benarafa C Housset D Marie Jean-Claude Frachet P El Benna Jamel Witko-Sarsat V

  • Publication date : 01 March 2019 More

    The Kinesin Light Chain-Related Protein PAT1 Promotes Superoxide Anion Production in Human Phagocytes. J Immunol. 2019 Mar 1;202(5):1549-1558

    Autors : Arabi-Derkawi R O'Dowd Y Cheng N Rolas L Boussetta T Raad H Marzaioli V Pintard Coralie Fasseu M Kroviarski Y Belambri SA Dang Pham My-Chan Ye RD Gougerot-Pocidalo Marie-Anne El Benna Jamel

  • Publication date : 02 October 2018 More

    NOX1-derived ROS drive the expression of Lipocalin-2 in colonic epithelial cells in inflammatory conditions Mucosal Immunology, 2018 Oct doi: 10.1038/s41385-018-0086-4.

    Autors : Makhezer N Ben-Khemis Marwah Liu Dan Khichane Y Marzaioli V Tlili A Mojallali Marjan Pintard Coralie Letteron Philippe Hurtado-Nedelec Maria Margarita El Benna Jamel Marie Jean-Claude Sannier A Pelletier Anne-Laure Dang Pham My-Chan

  • Publication date : 09 July 2018 More

    NADPH oxidase depletion in neutrophils from patients with cirrhosis and restoration via toll-like receptor 7/8 activation Gut. 2018;67(8):1505-1516

    Autors : Rolas L Boussif A Weiss Emmanuel Letteron Philippe Haddad O El Benna Jamel Rautou Pierre-Emmanuel Moreau Richard Perianin Axel

  • Publication date : 12 October 2017 More

    NOX5 and p22phox are 2 novel regulators of human monocytic differentiation into dendritic cells. Blood. 2017 Oct 12;130(15):1734-1745

    Autors : Marzaioli V Hurtado-Nedelec Maria Margarita Pintard Coralie Tlili A Marie Jean-Claude Monteiro RC Gougerot-Pocidalo Marie-Anne Dang Pham My-Chan El Benna Jamel

  • Publication date : 01 March 2017 More

    Vasoactive intestinal peptide dampens formyl-peptide-induced ROS production and inflammation by targeting a MAPK-p47(phox) phosphorylation pathway in monocytes Mucosal Immunology, 2017 Mar;10(2):332-340

    Autors : Chedid P Boussetta T Dang Pham My-Chan Belambri SA Marzaioli V, Fasseau M Walker Francine Couvineau Alain El Benna Jamel Marie Jean-Claude


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The latest notable publications

  • Publication date : 01 July 2021 More

    Acute-on-chronic liver failure: A distinct clinical syndrome J Hepatol .

    Autors : Moreau Richard Bin Gao Maria Papp Rafael Bañares Patrick S Kamath

  • Publication date : 02 June 2021 More

    Role of extracellular vesicles in liver diseases and their therapeutic potential Adv Drug Deliv Rev .

    Autors : Enis Kostallari Shantha Valainathan Biquard Louise Vijay H Shah Rautou Pierre-Emmanuel

  • Publication date : 11 March 2021 More

    Pancreatic Ductal Adenocarcinoma Arising in Young and Old Patients Displays Similar Molecular Features Cancers (Basel) .

    Autors : Raffenne Jérome Fernando A Martin Rémy Nicolle Marina Konta Yuna Blum Jérôme Torrisani Francesco Puleo Jean Baptiste Bachet Magali Svrcek Armel Bardier-Dupas Jean Francois Emile Peter Demetter Miroslav Radman Jean Luc Van Laethem Hammel Pascal Rebours Vinciane Paradis Valérie Couvelard Anne Cros Jérome